asked the united states to look into the olderbrothertamerlantofind out possible terrorist connections or connections to radical islam. now, the fbi said in a statement just a few days ago that they interviewed him, his family, there was some sort of surveillance checking into computer and phone records possibly and the fbi concluded that there was no evidence of any terrorism either foreign or domestic and any ties to terrorism on his behalf. now, that all came before that trip to russia where we've learned that he might have traveled under a false name, so when he came back to the united states, why the fbi did not go back to investigate that, that's the big question especially for those who oversee the fbi and members of congress who want to know why there was no apparent investigation followed up on that. >> and, chris, the family members of the brothers have painted a complex picture of these men. can you tell us about the family dynamics. what have we learned? >> reporter: sure, his mother and father recently returned back to russia. they had lived here in the united